JPH0460424A - Method and apparatus for weighing paint - Google Patents

Abstract

PURPOSE:To reduce a labor load and easily adjust a flow rate of paint by pressing a valve open/close lever of a valve open/close jig which is coupled to a paint vessel to a fixed object while the vessel is tilted with a rotation axis as the center. CONSTITUTION:When a paint vessel fixed on a support 4 is tilted by a rotation with a rotation axis 5 as the center, a valve open/close lever 11 comes into contact with a fixed shaft 14. Since a coupling shaft 9 is pulled when the lever 11 is pushed, a slide valve 8 is pulled up to have an injection port 7 opened as well as a rotation of a lid 12 which has closed a hole of a draft tube 15 with an axis 14 as the center makes a gap between the hole and the lid 12 to have the atmosphere and inside the vessel communicated with each other. In an initial stage for pouring a constant amount of paint 3, the tilting of the paint vessel 1 is large and also the slide valve 8 is opened largely with the lever 11 pushed largely so that a flow rate of the paint 3 is made large, while in a final stage the tilting of the paint 3 is made small and the slide valve 8 is slightly opened with the lever 11 slightly pushed so that a flow rate of the paint 3 is made small, thereby taking out the paint 3 accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a paint measuring method for collecting a predetermined amount of paint in a paint container, and a paint measuring device used in this method.

(Prior art and its problems) Conventionally, as a method of weighing a predetermined amount of paint, as described in Japanese Utility Model Publication No. 52-35324, a container opening/closing valve is attached to the paint container, and the container is placed in one side. A known method is to adjust the opening/closing degree of the valve by operating the valve lever with the other finger of F while supporting the valve with one hand, thereby adjusting the flow rate of the paint. However, this method has the problem of placing a large load on the hands, fingers, and arms, resulting in a heavy workload.

Furthermore, in Japanese Patent Application Laid-Open No. 59-143921, a container opening/closing valve is attached to the paint container, and the paint container is held at a certain angle (for example, 90°).
A method is described in which a predetermined amount of paint is automatically weighed by tilting the balance (0°) and opening and closing a valve using electrical signals from a computer connected to the balance. However, in this method, the paint container is tilted at a fixed angle, and the adjustment of the paint flow rate depends only on the degree of opening and closing of the valve. There were difficulties in adjusting the method, such as too much paint coming out when collecting small amounts of the paint.

(Means for Solving the Problems) Therefore, the inventors of the present invention have completed the present invention as a result of intensive studies on a method for measuring paint that can reduce the workload and easily adjust the flow rate of paint. .

That is, the present invention tilts the paint container around the rotation axis and presses the valve opening/closing lever of the valve opening/closing jig coupled to the paint container against a fixed object, thereby opening the valve body that interlocks with the valve opening/closing lever. The present invention provides a method for measuring paint, which comprises: operating the container to open the paint outlet of the container, causing the paint in the container to flow into a receiver, and weighing the amount of paint in the receiver with a balance. be.

The present invention also provides a support stand, a paint container removably fixed to the support stand, a valve opening/closing jig coupled to the container, a fixed paint container and a valve opening/closing jig, which are used in the above paint measuring method. an instrument or device for tilting the tool around the axis of rotation;
a fixed object arranged at a position in contact with the valve opening/closing lever of the inclined valve opening/closing jig, and a fixed object arranged below the fixed object,
The present invention also provides a paint measuring device comprising a balance on which a receiver is mounted to collect the paint flowing out from the paint container.

The present invention will be explained below based on examples.

An example of the paint measuring device of the present invention is shown in FIGS. 1, 2, and 3. FIG. 1 is a sectional view of the paint container and valve opening/closing jig of the apparatus of the present invention, FIG. 2 is a side view of the entire apparatus, and FIG. 3 is a plan view of the entire apparatus.

In FIG. 1, a paint container top lid 2 is attached to a paint container body 1, and the paint container body 1 is fixed to a support base 4. As shown in FIG. The container can be fixed with a band, and the container can be tightened with metal fittings.

The support stand 4 is capable of circular movement around a rotating shaft 5 whose bearing portion is a bearing 6 attached to the stand 20.
The paint container main body 1 is inclined in accordance with the circular movement of the support base 4.

The paint container upper lid 2 has a pouring lower that serves as an outlet for the paint, and the upper lid 2 has a slide valve 8 for opening and closing the pouring lower. A valve opening/closing lever 11 that rotates around a shaft 13, a connecting rod 9 that transmits the movement of the lever 11 to the slide valve 8. and connecting rod 9
A valve opening/closing jig consisting of a spring 10 is attached to connect the upper lid 2 and the upper lid 2, and the upper lid 2 is further provided with a ventilation pipe 15. The hole on the outside air side of the ventilation pipe 15 is connected to the lever 1.
When 1 is not pressed (lower is closed), the palate is closed by the roof of the mouth 12, and the roof of the mouth 12 is linked to the lever 11, and when the lever 11 is pushed, the roof of the mouth 12 is pushed up. A gap is created between the hole on the outside air side of the ventilation pipe 15 and the opening i12.

Referring to FIG. 1, the movement of the valve opening/closing jig when collecting a certain amount of paint 3 in a paint container will be explained. When the paint container fixed to the support stand 4 is tilted by rotational movement around the rotating shaft 5, the valve opening/closing lever 11 comes into contact with the fixing rod 14 fixed to the stand 20, and when the paint container is further tilted, the lever 11 comes into contact with the fixing rod 14 fixed to the stand 20. are relatively pushed by the fixed rod 14. The fixed rod 14 pushes the lever 11 relatively, and may be a fixed object installed at a position where the lever 11 is pushed relatively by tilting (it does not need to be a rod. 11 is pushed, the connecting rod 9 is pulled, so the slide valve 8 is pulled up and the pouring lower is opened (and the palate 12 that was blocking the hole of the ventilation pipe 15 is opened).
Due to the rotational movement about the shaft 13, a gap is created between the hole and the palate 12, allowing communication between the outside air and the inside of the container. When pouring a certain amount of paint, at the initial stage, the inclination of the paint container is increased, and the lever 11 is pushed hard to open the slide valve 8 wide, thereby increasing the amount of paint flowing out. By reducing the inclination of the lever and slightly opening the slide valve 8 by slightly pushing the lever 11, the amount of paint flowing out can be minimized, allowing accurate collection of paint.Also, since the vent pipe 15 is open, the paint can be collected with high accuracy. The paint can be collected smoothly without any pulsation. After collecting the paint, the lever 11 is returned to its original position by the force of the spring 10 by restoring the tilt of the container to its original position.
The pouring lower is closed by the slide valve 8, and the hole in the ventilation pipe 15 is closed by the palate 12.

An example of how to use it will be explained based on FIG. 2.

A balance 22 is installed directly below the position where the paint flows out from the paint container, a receiver 21 is placed on it, and the weight scale of the balance 22 is set to 0.

Next, the rotary operation lever 23 connected to the rotary shaft 5 is operated to rotate the rotary shaft 5, thereby tilting the paint container fixed to the support base 4 and bringing the valve opening/closing lever 11 into contact with the fixed rod 14. When contact occurs, the force of the spring lO should be made stronger than the moment that pushes the lever 11 so that the slip valve 8 will not be pulled up automatically and open Note [ ] 7 even if you release your hand from the rotary operation lever 23. is preferred.

After contact, the paint container is further tilted by operating the rotary operation lever 23 against the force of the spring IO, and the valve opening/closing lever 11 is pushed relatively by the fixed rod 14 to pull up the slide valve 8. By opening the pouring lower, the paint 3 in the paint container flows down into the receiver 21. Fixed rod 1
Position 4 is a position where the lever 11 can be pushed relatively, and may be set as appropriate depending on the inclination of the container. In order to be able to vary the inclination of the container, fixing rods may be installed at several locations on the pedestal so that the position of the fixing rod can be selected depending on the amount of paint in the container, etc.

When collecting paint, while checking the measured value on the balance 22, if there is a large difference from the target measured value, increase the rotation angle of the rotating shaft 5, increase the tilt of the container and the opening degree of the pouring lower, and thereby remove the paint. It is desirable to increase the flow rate and, when the difference becomes smaller, to decrease the rotation angle and allow the liquid to flow down little by little.

Here, due to the lever principle, only a small force is applied to the rotation operating lever 23, and at the same rotation angle, the lever 23
Since the moving distance of the operating part 3 can be much larger than the length of pushing the valve opening/closing lever 11, fine adjustment of the paint flow rate can be easily performed.

FIG. 4 shows an example of an automatic weighing device in which the rotating shaft 5 in FIGS. 2 and 3 is operated automatically by a computer instead of being manually operated by the rotation operating lever 23.

A stepping motor 3o that rotates the rotating shaft 5 is connected to the computer 33 via a controller (pulse generator) 32 and a driver 31, and the computer 33 is also connected to the balance 22. When a target weighing value is set in the computer 33, the controller 32 sends a pulse signal in accordance with it, and the driver 31 sequentially switches the current flowing through the motor coil of the stepping motor 30, thereby rotating the stepping motor 3°. The rotating shaft 5 rotates, the paint container is tilted, and the spout is opened, causing paint to flow down from the pouring lower to the receiver 21. The weight of the paint collected in the receiver 21 is measured by the balance 2.
2 to the computer 33, the computer 33 calculates the difference between the flow rate value, the target measured value, and the weight of the sampled paint, and controls the controller 32 and the driver 31 to increase or decrease the rotation angle of the rotating shaft 5 based on the calculated value. The stepping motor 30 performs quick and accurate metering.

FIG. 5 shows an example of the change in paint flow rate over time when the inclination angle of the paint can and the opening area of the valve are kept constant.

Figure 5 shows the following conditions: paint can capacity: lJ2, paint ji in the can at the start of measurement: 900g, paint specific gravity: 1.30. Paint N viscosity: Tilt the paint can with 560 cps and the tilt angle of the can is 11.
0° (slip valve movement distance 8IIIffi, opening area 6
8 mm'') and can inclination angle 107' (slip valve movement path [6aa+, opening area 22 am'') Toshita case (7) is a diagram showing changes in paint flow rate over time.

As is clear from FIG. 5, even if the inclination angle and the opening area of the valve are kept constant, the paint flow rate changes over time and does not maintain a constant value. This is because the amount of paint remaining in the can has a large effect.

In the method of the present invention, when measuring paint by automatic operation by a computer, in addition to the difference between the target value and the weighed value from the signal sent from the balance, the instantaneous flow rate value is calculated by the computer from both values. In other words, if the difference between the target measured value and the weighed value is large compared to the instantaneous flow rate value, by increasing the inclination angle and increasing the flow rate,
Furthermore, it enables measurement to be performed in a short time, and on the other hand, when the difference between the target measurement value and the weighed value is small compared to the instantaneous flow rate value, the inclination angle is decreased to reduce the flow rate to perform accurate measurement. It is preferable that the instantaneous flow rate value be calculated by a computer and that the optimal tilt angle for reliable and quick measurement can be set from both values.

According to the method of the present invention, the workload can be reduced and the flow rate of paint can be easily adjusted.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an example of the paint container and valve opening/closing jig of the device of the present invention, FIG. 2 is a side view of an example of the device of the present invention, and FIG. 3 is a plan view of the device of FIG. It is a diagram. FIG. 4 is a model diagram of the apparatus of the present invention, which uses automatic metering by computer, viewed from the front. FIG. 5 is a diagram showing an example of a change over time in the paint flow rate when the inclination angle of the paint can and the opening area of the valve are kept constant. l...Paint container body, 2...Paint container top lid, 3...
・Paint, 4... Support stand, 5... Rotating shaft, 6... Bearing, 7... Spout, 8... Slip valve, 9... Connecting rod, lO... Spring, 11...Valve opening/closing lever 12...
・Palate, 13... Axis, 14... Fixed rod, 15...
Ventilation pipe, 20... Frame, 21... Receptor, 22...
- Balance, 23...Rotary operation lever 30...Stepping motor, 31...Driver 32...Controller, 33...Computer Figure 1 1.5 Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] 1. A valve that operates in conjunction with the valve opening/closing lever by tilting the paint container around the rotation axis and pressing the valve opening/closing lever of the valve opening/closing jig connected to the paint container against a fixed object. A method for measuring paint, which comprises operating a body to open a paint outlet of the container, causing the paint in the container to flow into a receiver, and weighing the amount of paint in the receiver with a balance. 2. A rotating shaft for tilting the paint container is linked to a motor, and the motor is operated by a signal from the balance to control the rotation angle of the rotating shaft to adjust the tilt of the paint container and the opening of the valve. 2. The method for measuring paint according to claim 1, further comprising adjusting the degree of paint and automatically weighing a predetermined amount of paint. 3. A support stand, a paint container removably fixed to the support stand,
A valve opening/closing jig coupled to the container, an instrument or device for tilting the fixed paint container and the valve opening/closing jig around the rotation axis, and contacting the valve opening/closing lever of the tilted valve opening/closing jig. 1. A paint metering device comprising: a fixture disposed at a position; and a balance disposed below the fixture and carrying a receiver for collecting paint flowing out of the paint container. 4. The paint measuring device according to claim 3, wherein the instrument or device for tilting has a manual lever connected to the rotating shaft.